N=int(input())
A=list(map(int,input().split()))
for i in range(N):
  A[i]-=1
result=[]
for x in range(N):
  pos=-1
  for i in range(N):
    if A[i]==x:
      pos=i
      break
  for j in range(pos-1,x-1,-1):
    A[j],A[j+1]=A[j+1],A[j]
    result.append(j+1)
print('Yes')
print(len(result))
for i in range(len(result)):
  print(result[i])